If you just can’t do without drinking several cups of coffee in a day, here is some shocking news for you.

If you have been wondering how much coffee is too much, here is your answer. A research from the University of South Australia has revealed that drinking six or more cups of coffee in a day can increase your risk of heart disease by up to 22 per cent. The study researchers say that drinking 6 cups of coffees or more can be linked to a high risk of high blood pressure which could ultimately cause heart disease.

For long, we have associated excess coffee consumption with more jitteriness and anxiety. But this is a serious side effect of overconsumption that should make you stick to a moderate amount of this simulator. There is, of course, nothing wrong in having the usual 2 or 3 cups of coffee. You must also make sure that you are not having coffee post 4 or 5 pm. Drinking caffeine after that time can detrimentally affect your sleep. Here are some other side effects of coffee you have got to beware of:

If you have been having cups of coffee to stay alert and beat drowsiness, you could, in fact, suffer from insomnia. Having coffee especially in the later part of the day (that is post 5 pm) can keep you awake through the night. The stimulating powers of coffee are best taken advantage of in the morning or early afternoon.

Did you know that having too much coffee during your exams or before an important meeting can make you even more stressed? This is because coffee can stimulate the production of cortisol, the stress hormone. This can mean more anxiety and even headache.

Coffee can be bad for your immune system if you have it in excess. Some compounds in coffee can block certain infection-fighting cells in the body that prevent the entry of foreign bodies in your blood stream.